Bosch cis fuel pressure chart. 6 +-20 bar only fuel pump run: 2.

Bosch cis fuel pressure chart 67/lower NAPA #1243 Oct 3, 2015 · 4. Control Pressure (Cold and Warm) - see WUR fuel pressures, model specific. E-Electronic with metric threads (Will not test other Bosch fuel Mar 7, 2019 · CIS Flowtech - Rebuilding Bosch Fuel Distributors & Warm-Up Regulators [SIGPIC] [/SIGPIC] 1991 560SEC 199 /268, 17" RS90'S, Eibach springs, Bilstein HD shocks, Custom rear sway bar, Euro Headlights, Custom ceramic coated headers and down pipes with stainless dual exhaust, W140 glass sunroof, dog ear trunk spoiler, OEM Skid Plate, Euro bumpers Jan 27, 2025 · SGT 33800 packed in a durable, plastic molded storage case with carrying handle. E-Electronic with metric threads (Will not test other Bosch fuel Apr 13, 2008 · The warm up regulator takes as input the fuel output line on top of the fuel distributor, which, by itself is system pressure (5. Most follow a pattern, and most will require Jun 21, 2017 · You can lower the warm control pressure in the WUR by raising the big plug so the FD presents less pressure countering the rise of the fuel plunger to the slots. The spring pressure is adjusted at the factory, or by the rebuilder when refurbishment of the FD becomes neccesary. It details the components and functions of the K Jetronic system, including the fuel distributor, fuel pump, pressure regulator, and injectors. The main fuel pressure is fine (about 75PSI). leak down test f Fuel pressure regulator f Weak fuel pump f Fuel line integrity i. no more than 4 mins. com FREE DELIVERY possible on eligible purchases Mar 23, 2024 · - System pressure is 4. In this 22-minute training video May 24, 2022 · Don't forget - it's all about pressures on a CIS car. injectors, high pressure pumps and rail assemblies) there can be two Bosch part numbers for the same component, depending on whether it was manufactured and supplied by Bosch direct to the vehicle manufacturer (OEM) or supplied to the Bosch aftermarket network. , 2 min. The Volvo CIS (K-Jetronic) manual I have lists the following trouble shooting chart for low top speed (poor engine performance): Apr 28, 2021 · I've replaced the fuel pump with a new Bosch unit, new filter and new injectors. Deactivate fuel pump and relieve fuel system pressure. Bosch CIS Is K-Jetronic Porsche 911 DIY Repair Blog: http://joe-engineer. To which I say, “Cool” I cut my teeth on CIS as a young tech back in the 80s and 90s, and have a strong fondness for the system. 5). 1. To increase fuel flow you must increase the fuel pressure on the K-Jetronic. System pressure is the other way around. Excess fuel from the pressure regulator flows back through a return line to the fuel tank. They all have the same Bosch part number on them, but the one with the higher output and crack pressure has an additional stamp on it (014). -My WUR is not stock - see pics. range. Feb 11, 2008 · Techron works really well. Jan 13, 2008 · The question is that when reconnecting the WUR pressure would start at about 0. PS I see on many F part supplier websites that they are selling Bosch 0580464125 as being Ferrari PN 121727 -- but this is not quite right. 0-4. e. Types of Bosch High Pressure Pumps CP3x CP1x CP4x High Pressure Pump (Common Rail Pump) Bosch common rail high-pressure pump continuously generates high-pressure fuel and supplies it to the rail. 2 Bar, all models. When the WUR is cold it allows a lot of pressure to bleed off resulting in a low control pressure and a richer mixture. It was fairly prevalent back in the ’70s and ’80s on cars from VW, BMW, Audi, Porsche, Mercedes-Benz, Volvo, Saab and even Ferrari. Fuel is continuously Jan 8, 2009 · Let's pretend that the guy in the picture above is the fuel accumulator delivering a 'back pressure' against the fuel return pressure going to the tank and supposedly preventing the gasoline from entering the lower chamber of the FA under test as claimed by some knowledgeable people. Other Bosch CIS systems may be similar, however later model cars were upgraded with electronics for emissions control. Basic kit without extras. The pressure test kit includes a 100 PSI fuel pressure gauge with a quick release valve and seven hose assemblies with four paired hose adapters. From the reg to the top of the fuel distributor will confirm if the reg is working correctly, make sure you have the The pressure test kit checks electronic and standard Continuous Injection Systems, GM throttle body, Ford CFI, and Asian and European AFC. Bosch Port Fuel Injectors (PFI) have a robust design and are capable of using Ethanol fuel (E100). 15 bar/2. In '74, the CIS continued with the upgrade to the 2. Any rubber hose supply house will have them and the gauges pretty cheap. Beginning with the fuel pump which should produce 5-6bars pressure (87psi), a working and sealing check valve behind the fuel pump, the fuel accumulator, WUR, the fuel distributor and not to forget - the injectorsif only one part of this daisy chain won't work properly, it will compromise Oct 8, 2020 · Hi - I’d like to shim my fuel distributor to obtain correct system pressure. It is supposed to be 30-45 PSI depending on temperature. Mine ends in a part number of 011, vary basic. If you decide to repair your fuel distributor you do so at your own risk. Warm control pressure too high (seeWarm-up Regulator) 11- Do- 0-IIN- No. Aug 18, 2003 · precise fuel pressure and adequate fuel volume. Group II: 43~49 psi. Injection valve(s) leaking, opening pressure toolow(see I demonstrate how to test the fuel pressure in our 1988 VW Cabriolet. 99 $ 65 . This includes Ford high pressure central fuel injection and GM, Ford, and Chrysler multi-port fuel injection. . The fittings in the Fuel Injection Fittings Kit let you connect a pressure gauge into the fuel system to test the pressure of the fuel pump, supply (delivery) lines, and return lines. The Bosch 69435 fuel pump is used on the 1984-1987 190, 1987-1989 260, 1977-1981 280, 1986-1992 300, 1981-1985 380, 1976-1980 450, and 1984-1985 500 engines with CIS injection. I have it hooked up. Warm control pressure too low (seeWarm-upRegulator) 0- Incorrect system pressure (seeSystem Pressure) Fuel system pressure leakage (seeFuel Leaks) 10. For K-Jetronic and KE-Jetronic fuel injection. 7 bar (part of our early cleaning processes during the reanimatino had freed up the stuck fuel pressure regulating piston and spring assembly) Finally, we checked our control pressure—which the CIS injection uses to counterbalance the airflow meter's movement and balances against the system pressure. CIS, CIS-E and CIS-M are all under one "family" of Bosch fuel injections--and are easily identifiable by their lack of electrical harnesses to the individual injectors. Mar 8, 2016 · Ok guys- I just received my Bosch k-jet CIS gauge in the mail. 3. 5 bar. As a side note, if you wanted to use this data to compare the injectors themselves, you need to calculate the value: CIS Injection. This is necessary to comply with the current rules of a racing class (SCCA Improved Touring). E-Electronic with metric threads (Will not test other Bosch fuel Mar 25, 2010 · According to the "Bosch Fuel Injection & Engine Management" book you simply run the fuel pump for 10 seconds and shift the CIS pressure gauge valve back and forth a few times to clear the entrapped air from the CIS system. Does anyone have the dimensions for them offhand so I can have them at the ready to dial in the pressure? Oct 28, 2004 · The Fuel Pump This type of high pressure fuel pump is denoted as a roller cell pump, with the fuel entering the pump and being compressed by rotating cells that force it through the pump at high pressure. 39/each Fuel pump: Bosch#0580254947/Ferrrari # []$222. 67/lower NAPA #1243 0- Incorrect cold control pressure (seeWarm-up Regulator) 10. Bosch CIS Training Series 4: How to Hook Up and Test K-Jetronic Fuel Pressure BOSCH CIS-E SYSTEM Article Text (p. Nov 22, 2019 · The later larger Bosch CIS fuel pump with the replaceable check valve (that would be more functionally equivalent to your stock fuel pump) is Bosch 0580254947 = Bosch USA 69532. Tests: Fuel pump check valve i. Electric Power Tools. Thechange to CIS-E followed the normal evolution of the fuel injection systems wehad become familiar with—CIS, CIS-Lambda, then CIS-E. 4. This document provides technical instruction for the Bosch K Jetronic fuel injection system used in automobiles. 50 male Bosch CIS (cont. You will need an adaptor to connect your CIS gauge to the fitting you disconnected from the fuel accumulator. Pressure regulating valves in the fuel distributor equalize system pressure. The TROUBLE SHOOTING and DIAGNOSTIC TESTING sections will help in diag-nosing problems with the CIS-E fuel injection system. I have a 1980 3. Fuel does not go to the 6 injectors (cylinders) until the plunger (AFS) is raised up. To evaluate the control fuel pressure, plug the electrical connector to the WUR and run the FP for 4 mins. The document aims to explain how the K Jetronic system works and provide guidance on diagnosing and repairing issues. 6)1987 Mercedes-Benz 560SL Fig. The K-Jetronic system is a continuous injection type that supplies fuel to each cylinder under all operating conditions. This site contains information on the Bosch Contunious Injection System (CIS) used on the Porsche 911 engines from Model Year 1973. 5 Bar. It includes a 3. Most of the CIS fittings are 12mm. 4 bar. 15 Fuel filter upper copper gasket NAPA#1242 $0. If after checking the “Leaky gas cap” step and the cap is determined to be OK, then the WUR is at issue. 5. Remove fuel pump relay. Connect connector A of the fuel pressure gauge to the A port of fuel distributor (show in picture 2). Group III: 50~55 psi. 00 x M12–1. It stands for Continuous Injection System, which means that fuel is continually atomized into the intake manifold just upstream of the intake valve. 11: Wiring Diagram for 190E CIS-E Fuel Inj. Tests C. Then, replace the fuel filter and take a peak at those o-rings, the fuel pressure regulator valve and the fuel injection cups. Figure 5-3 taken from Chapter 5, page 19 of “Bosch Fuel Injection & Engine Management” Charles O. I test them for cracking pressures and group them into: Group I: 36~42 psi. Jun 21, 2021 · Pressure test: Connect the CIS pressure gauge to the main fuel line delivery coming from the FP. Always wear safety glasses. Mar 27, 2008 · "An engine equipped witha Bosch CIS (K-Jetronic) fuel injection system depends on the accuracy of the control pressure for starting and drivability performance. EFI systems don't have any cooling mechanism. Multi-port means one fuel injector per cylinder. The extra fuel is then return to the main fuel tank via WUR and FD relief valve. 0-11o. 4 liter engine shown above, was the first CIS fuel systemproduced by Porsche and the first CIS system utilized for a passenger vehicle. Hardware f Large, easy-to-read 0-100 psi scale f Solid brass fittings f Pressure relief valve for safe, clean testing Tests: f Fuel pump check valve i. This test of the Bosch CIS system checks the system pressure as well as the control pre May 18, 2023 · So you bought a vintage Audi, BMW, Mercedes, Saab, Volvo or VW with the Bosch CIS fuel injection system. These vehicles are equipped with Bosch C. When the fuel lines are first loosened about 10cc of pressurized fuel will squirt out. Jan 24, 2010 · This chart shows the Bosch Part Numbers for Fuel Pumps. What is: Cold pressure control: engine cold, valve open - what should it read? Warm control pressure: engine warm, valve open - what should it read? Jul 4, 2020 · DESCRIPTION The Bosch Continuous Injection System, Fig. Jan 24, 2007 · And yes, lower control pressure = richer, and vice versa. With new injectors, line pressure with UTCIS unplugged is still 86-87PSI. For common rail components (e. ) Fuel filter Injectors Intake manifold Engine English 3 Diagram B– Piggyback example (for CIS) Gauge and hose assembly 71404 M8–1. Primary pressure is 5 bar Control pressure starts at 40 psi and slowly stabilizes up to 50 psi or 3. NOTE: When connecting to a fuel system, use the Warm Up Regulator-( CIS ) Control Pressure Regulator by Bosch. 6 +-20 bar only fuel pump run: 2. 50 male w/ o-ring 71408 Connecting hose and valve assembly 60410 M8–1. The Fuel Pressure Tester Kit works on most domestic fuel injected vehicles having a Schrader valve test port on the fuel rail. K-Jetronic Fuel Injection Systems. Closely observe the control pressure build up after 1 min. I am ABSOLUTELY ECSTATIC. So something is blocking the control pressure. I did a couple of applications and let it dry in the Fig. I ordered a new Bosch injector and the one I received also has an (014) stamp on it. Jul 29, 2020 · Fuel Injectors. This in-line pressure tester indicates problem sources - control pressure regulator, fuel distributors or other specific fuel injection components that may require replacing. As the WUR heats up it allows less pressure to bleed off and the control pressure is higher resulting in a leaner mixture. Charles Probst, in the bible for CIS "Bosch Fuel Injection and Engine Management," Bentley 1989, says the system pressure regulator shims (washers) are 0. injector is equal. (Audi 80, VW Rabbit, Scirocco, etc. I. 2: View of Bosch CIS-E Diagnostic Tester The fixed on-off ratio indicates a possible malfunction. The adaptor would be 14-mm x 1. com/Step by step process on how to perform the fuel pressure tests on air-cooled Porsche 911s running Bosch Oct 30, 2020 · With all this done i have a digital fuel pressure gauge in the cab and i can see the fuel pressure oscillating wildly. My fuel pumps are 1 and 2 years old respectively with less than 1,000 mikes and still reading . CIS Flowtech 9389Twin Beech Rd Fairhope, AL 36532. Engine temperature has no effect upon system pressure test. 13: Wiring Diagram for 420 & 560 Series CIS-E Fuel Inj. The Bosch fuel injector has a return rate of 1 part per million (PPM), making Bosch the industry benchmark. With all this done i have a digital fuel pressure gauge in the cab and i can see the fuel pressure oscillating wildly. Obviously there is still some oscillation and i will look at installing the Bosch damper. What do you think of these pressures with respect to Bosch spec for the 045 WUR (Bar is my control pressure, refBar are the spec range from Bosch manuals)? Are these control pressures what your well-running 045 WUR produces? I have a dash gauge that reads WUR fuel pressure, so I can see from start-up how the control pressure increases as the engine warms. That fuel pressure differential should be documented in your specs sheet/manual. Sep 22, 2020 · If you have worked with older European cars, then you have likely encountered Bosch CIS injection. Injection valve(s) leaking, opening pressure toolow(see mercedessource Product - NEW! FIRST 10 SOLD on sale. When installed, the gauge will look like an upside down […] Aug 11, 2004 · BETOOLL Digital Fuel Injection Pressure Tester Kit - Fuel Pressure Gauge 0-300 PSI for Petrol Engine Fuel Pressure Test Kit Automotive Test Tool Kit 4. Attach pressure gauge line "3" or "B" to cold start fitting on fuel distributor upper chamber. FUEL -- Remove the Bosch CIS components consisting of mechanical fuel injectors, fuel distributor, air flow sensor assembly and miscellaneous warmup and enrichment devices; they will no longer be used. 2: CIS-E Fuel Injection Layout (300E) Fig. What you are looking for is a differential between the upper and lower chamber pressure at the fuel distributor. The email questions from owners trying to get their old fuel-injected 1970 to 1993 Mercedes running right drive him crazy. This 6 page procedure is designed to guide you through setting a baseline fuel tune on your early 928 with Bosch K-Jetronic CIS. Bridge terminals No. During operation the intake air quantity is metered by an air-flow sensor installed in front Dec 6, 2010 · More importantly, this sort of injector "flow" testing isn't valid for CIS -- what determines the amount of fuel delivered in CIS is the opening size of the slit in the fuel distributor and the pressure difference across the slit. System pressure for all normally aspirated 911s is 5 Bar. Ideally I'd like to keep the fuel pump but I'm afraid I will will end up with a hose with a 10mm banjo if I order the 78-79 part, 91135606607. mercedessource Product - For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines This video will help you decide if you want to try to do a fuel pressure test yourself. Jul 16, 2018 · My car currently has a Bosch 044 fuel pump with an external check valve that requires a 12mm banjo. While at startup, engine (and WUR) still cold, if I immediately did the simple airflow sensor raise/lower check, on pulling down on the airflow sensor plate, the engine speed immediately increased several hundred Sep 3, 2014 · The system pressure was also in spec at 4. Typically around . Fig. The fuel pressure delivered by the FP is in excess of what's needed by the fuel distributor (FD) which have been factory pre-set. If during a system pressure and performance test it is determined that the warm-up regulator is at fault, you are faced with an alternative: replace it (list price now about $280) or Bosch CIS Training Series 1: What’s Needed to Test K-Jet and KE-Jet Fuel Pressure. However, it requires clean fuel and pressures set to the correct specifications. I have not yet adjusted the pressure regulator with shims to raise it into spec. 5 (CIS gauge side). Bosch CIS Training Series 3: How to Do Preliminary Fuel Flow and FD Leak Tests Jul 3, 2010 · o2bad455 wrote:I'd like to use MSnS to combine fuel and ignition control of a Bosch CIS-E system (or alternately a CIS-Lambda system), leaving the CIS injectors rather than switching hardware to EFI. 5 (FA side) to 12-mm x 1. (Continuous Injection System) found on most late model European cars and Volkswagen models assembled in the U. After re-pressurizing the system, if the Residual pressure is now within spec, then the either the WUR or the gas cap is at fault. leak down test; Fuel 1 injector cracks (open) at 4 bar (58psi) and flows at 75 (21% more fuel) I have attached the test results. fuel injection. Turn on switch C of the fuel gauge. Also known as ( Cis ) Control pressure regulators. 6bar), and lets some of this pressure drain to the fuel return line, so the pressure is reduced. created Oct 18, 2001 CIS is made by Bosch and has been in use since the mid 70's on VWs and many other european cars. 4 out of 5 stars 2,513 $65. This is an in-line pressure tester which indicates problem Aug 8, 2020 · As long as the shut-off valve is installed at the WUR side. Mar 10, 2024 · While trying to get the car started, the original fuel pump failed, and I found the old injectors weren't opening under pressure. 5 through Model Year 1983 Jul 2, 2013 · CIS Primer for the Porsche 911 Bosch Fuel Injection & Engine Management by Charles O. My CIS pressure tester is permanently installed at the fuel distributor and just hook it up to WUR’s being tested. S K-JETRONIC FUEL INJECTION PRESSURE TESTER. ) 14. Currently the fuel delivery contains a normal hose clamp which is a solution I'm not satisfied with. Fuel pump check valve: Bosch#1-587010532000 $14. I am measuring near the entry to the DWUR. Be sure to remove all fuel lines prior to shipment. I stopped posting in BW’s R107, W124, W201 forums quite a while ago because there was (and still is) simply too much wrong info/advice posted and, unfortunately, no one there corrects it. Hand Tools May 17, 2023 · Buy MANUTEX Fuel Pressure Test Kit Fuel Pressure Gauge Complete Kit for Car Truck Motorcycle 0-140 PSI 45PCS: Fuel Pressure Testers - Amazon. The first one has good pics, it's a 6 port fuel head from an SC instead of an 8 port fuel head origonally cast for a V8 Mercedes like the 930 fuel distributor but they are very similar so that doesn't matter as far as becoming familiar with the internal parts by picture Repairing the CIS Jetronic Alloy adjustable Bosch Fuel distributor In General: Mercedes-Benz and Bosch doesn't support the repair of fuel distributors. If a problem Dec 23, 2011 · If the system is at 70psi and control at 45psi you have 25 psi difference. S. So lower control pressure = more fuel flow because the system pressure is essientially constant or at least should be. You can also use the Kit to test the fuel pump output volume. The system in general is very reliable, and was only bested in 1984 by the introduction of the Motronic engine management system that controls both ignition and fuel injection together. System pressure is checked with engine off. Welcome to Fuel Injection products We specialize in Bosch Fuel Injection Systems BOSCH & C. 2 psi) per shim. 1 mm shim increases the line pressure by 0. /Lambda Electronic with metric threads The oscillations are also not as wild. 85 psi and the 0. System Pressure - nominal 5. The Bosh fuel distributor has a test outlet for that. DeLorean warm up regulator, Mercedes-Benz warm up regulator, Porsche warm up regulator, Volvo, Audi, Lamborghini. The fuel is pumped by an electrically-driven roller cell f uel pump. Nov 15, 2021 · Buy JIFETOR Universal Auto Gasoline Gas Fuel Injection Pressure Tester Gauge Tool Set Only for Bosch CIS K-Jetronic System Car Truck SUV Motorcycle ATV RV SUV Red Case: Industrial & Scientific - Amazon. Currently the control pressure is measured around 85psi and even when I close the valve there is very little change to the pressure gauge for system pressure. 0 bar). 4 and 3. Remove fuel supply line for cold start valve from top of fuel distributor. May 5, 2007 · Here's a summary (vastly simplified) of the conversion from the Bosch K-jetronic CIS to MegaSquirt EFI in my 1978 450 SEL: Phase 1. 3 psi according to Volvo. Jan 4, 2010 · Here's some more links on bosch Kontinuierlich Jetronic system. 5 bar lower system pressure. 5 bar - the blip of the throttle when cold takes the pressure down to 40 psi and it slowly increases to 50 psi again. All units are remanufactured unless otherwise noted new and carry an 18 month warranty. 0-5. and record Apr 26, 2016 · CIS System Pressure: 4. It is frustrating that the purpose made k-jet kits only seem to be available in the states - and they want $100 for shipping and customs on top of the price of the kit, and a 4 week wait. Utilize the same fuel line you used from the above test. How to test cis fuel pressure. I cleaned the fuel tank with POR-15 marine clean and plenty of hot water. Connect connector B of the fuel pressure gauge to the B port of WRU ( shown in picture 3). Additional features and contents: * Test: -- C. Intake pipes changed from bent tubing to cast intake runners. Pressures System Pressure On the Bosch K-jet systems, this pressure can be measured at the top of the fuel distributor by connecting a continuous injection system pressure gauge from the top fitting in the fuel distributor (this is the horizontal one) to the warm-up regulator. Shipping Tips . /Lambda Electronic with metric threads and C. Example 1. 00 female x M12–1. Bosch CIS Training Series 1: What’s Needed to Test K-Jet and KE-Jet Fuel Pressure. Ignition Coil C90i-E8; Ignition Coil C90i-E10; Ignition Coil C90i-pro; Ignition Coil C90i-pro evo; Ignition Coil C90i-WG; Ignition Coil P50/P50-M; Ignition Coil P65 Ok so I competed some tests this morning. Get Probst book on fuel injection. 8 bar (about 10psi) and slowly increase to 2. Bosch K-Jetronic and KE-Jetronic are mechanical fuel injection systems for XR3i and XR3i Cabriolet models up to 1990 and RS Turbo models. clogged or damaged fuel filter Nov 23, 2024 · Don’t bother with the pressure to the injectors, it’s not a helpful test. IDEAL FOR TESTING: MERCEDES-BENZ BMW, PORSCHE, SAAB, VW VOLVO FUEL DISTRIBUTORS WUR, AND MORE. This is too broad for my taste. Video training manuals purchase separately. Feb 11, 2022 · Close the valve that is part of the fuel pressure gauge between the WUR and the fuel distributor. Jan 26, 2007 · Now today I got my Bosch CIS tester in the mail. Bosch CIS Training Series 2: Options to Get Fuel Pumps to Run with Engine Off. 0 bar CIS Control Pressure (at idle speed): warm-up regulator controlled: 3. Non-Electronic with metric threads, C. After calibrating hundred’s of these Bosch WUR’s, you will be able to establish that the factory manual instruction is not the ideal location. Diesel and Truck Tools. Fuel pressure is now 48-60PSI when warm and driving (still oscillation compared to the 52-54psi that rarly-l8 pints out). I had Rubber Specialties braze the fitting into my fuel supply hard line, so I didn't even have to worry about finding the metric How to build a cis test rig. 5 through Model Year 1983 Dec 27, 2020 · For some time I have posted here at BenzWorld about the KE-Jetronic and how to do quick & targeted diagnosis in case of CIS-E engine issues. The six differential pressure diaphragms can be adjusted with their adjustment screws, though usually one only adjusts them so each fuel injector discharges at the same rate as its Bosch CIS (cont. 5-5. 5-Inch (90-millimeter) gauge with dual calibration (5-145-PSI / 25-1,000-kPa), hose assembly and brass adapters. 02 / 91111019702 / 0438170009 Jan 21, 2003 · The 0. All Bosch fuel injectors released to the aftermarket are OE fit, form and function, and are produced to OE specifications. 7 and 8. This test is to show fuel pressure from fuel distributer right? To test control pressure I open the valve, and start the engine. 110. The 1973. 34 / 91111019734 / 911 110 197 02 / 911-110-197-02 / 911. How to Fuel Pressure Test a 1970 to 1975 D-Jetronic V8 Engine - On Demand Video. Stricter emissions standards were at Mar 31, 2010 · If your fuel pressure gauge is similar to mine (shown in picture 1), then you can do the following: 1. Jul 8, 2013 · CTA Tools 3420 Fuel Injection Pressure Tester-Bosch K Jetronic C. 0L to this problem, all fuel injectors, injector grommets, fuel pumps and fuel filter were replaced and the car was running very strong. Bosch introduced the CIS-E (Electronic) fuel in jection system in the early '80's on some Audi, Volkswagen, andMercedesBenzmodels, as well as other European cars. The design is typically German, simple, reliable, and very ingenious. 197. E-Electronic with metric threads (Will not test other Bosch fuel Mercedes 116 and 107 chassis models were built with both Bosch D-Jetronic and CIS K-Jetronic fuel injection systems during their production life. 9 bar - 5. 8 bar (about 40psi). 12: Wiring Diagram for 300E CIS-E Fuel Inj. But if the control pressure drops to 35psi then you have 35 psi difference and more fuel flows. Then this pressure is called the "control pressure" (3. Good work Dave! 01-19-2010, 09:22 AM With CIS, wouldn't increasing the fuel pressure lean it out? Apr 11, 2020 · The Porsche 928 continuous injection system is very robust when properly set up. Fuel Pump Delivery Rate - (750 cc/min through '77, 1000cc/min through '83). Control Pressure Aug 20, 2009 · This site contains information on the Bosch Contunious Injection System (CIS) used on the Porsche 911 engines from Model Year 1973. 3: CIS-E Fuel Injection Layout (420 & 560) OPERATION ON-BOARD DIAGNOSTIC READOUT SYSTEM Various components of the CIS-E injection system are checked by a microprocessor in the control unit. Apr 22, 2023 · What are the Bosch ID # of the WUR & FD in your motor? The cracking pressures for the CIS fuel injectors is 36~52 psi. 99 Copper crush rings for fuel distributor-to-WUR line: NAPA#2-17447 $1. The system I'll be talking about is K-Jetronic, and came in the early water-cooled Volkswagens and Audis, from the late 70s to early 90s. Repairing a fuel distributor is a precise job that requires basic metric tools, fuel pressure gauges, and some shop made Aug 9, 2007 · Actually "Motronic" is only a term Bosch applies to their "one box" engine management systems (combining fuel injection and ignition management). Test C. I plan to check out the pressure. I have read the directions but am not sure what I should be reading. You'll see the little washer under the spring on the CP Rest Pressure Kit A1 1 TM User’s Guide Control Pressure Rest Pressure Kit For 1974 to 1977 Bosch CIS Systems Note: The fuel system should be under pressure even when the car is off. Features: Injection pressures ranging from 1,400 to 2,800 bar can be achieved with different generations of Bosch CRS Repairing the CIS Jetronic Alloy adjustable Bosch Fuel distributor In General: Mercedes-Benz and Bosch doesn't support the repair of fuel distributors. Repairing a fuel distributor is a precise job that requires basic metric tools, fuel pressure gauges, and some shop made Volkswagen Fuel System ; Volkswagen Cabriolet & Rabbit Convertible Technical Information (Factory Fuel Systems) Porsche 911 (1973 - 1983) General Information on the Bosch K-Jetronic Injection System ; Tuning and Adjusting CIS Fuel Injection (Porsche 911) WORKSHOP MANUAL Porsche K-Jetronic (Book *. I wasn't sure about the ebay all purpose kits, but will give one a go. This is a huge advantage on air-cooled engines where the heat soak is brutal. Attachment to test D-Jetronic can be purchased separately. 5 mm shim increases the line pressure by 4. Probst, SAE Published by Robert Bentley ISBN: 0-8376-0300-5 How to Tune & Modify Bosch Fuel Injection by Ben Watson Published by MBI Publishing Company ISBN: 0-87938-570-7 With the valve closed (FP running) you get the system fuel pressure. These in-line pressure testers indicate problem sources, like control pressure regulator, fuel distributors, or other specific fuel injection components that may require replacing. The fuel pressure at 74 will work but 80 is better. The pump is capable of producing a pressure of 8 bar (120 psi) with a delivery rate of approximately 4 to 5 litres per minute. The UTCIS can only be used to upgrade CIS K-Jetronic systems. Can anyone please confirm these values? Dec 12, 2014 · The air stream controls fuel volume. According to Carl Rose's "Ferrari 328 CIS Fuel Pressure Check" those values should be between 1. 0- Incorrect cold control pressure (seeWarm-up Regulator) 10. CIS fuel injectors are simply spring-loaded mechanical assemblies so theoretically you should be able to clean them, test them, and if the spray pattern and pressure at which they open and flow fuel looks good and they don’t leak, then they can be re-used. My control pressure is way too high, 75 PSI, basically the same pressure as the main fuel pressure. Injectors, CPR, fuel distributor, pumps will all get unvarnished, the death of k-jet. 2. Sys. 72 Accumulator: Bosch# 438170004/Ferrari #113978 Fuel filter: Bosch#71039(0450905601)/Ferrari #117792 $16. non-electronic with metric threads -- C. For the Turbo cars (930) system pressure is higher, around 6. Those items have been replaced, but now I have no spark so I'm chasing that gremlin down. 36, is a mechanically and continuously operating fuel injection system which does not have to be driven by the vehicle engine. Nov 18, 2009 · Some of your questions have been answered by others. Bosch is the leading manufacturer of fuel system components, ignition parts, and all other electrical components for European auto manufacturers, providing innovative Jul 22, 2008 · The fuel pump/accumulator package weighs about 5lb. 7 liter engine and several changes were incorporated. Injector to suit Holden Captiva CRD 2. The very instant the FP ran, that's your cold fuel pressure. A MUST-HAVE IN YOUR SHOP TOOLBOX FOR TESTING ALL CONTINUOUS INJECTION & K-JETRONIC SYSTEMS. Oct 13, 2008 · I have a gauge for system pressure already, adding the control pressure side when the engine goes back in. The Bosch K-Jetronic CIS fuel distributors are common on all 928s that use these systems. I strongly believe that the fuel pressure regulator in the fuel distributor was shimmed wrong on my car! I was reading that to add pressure you need to add shims and to reduce pressure you need to take away shims. 2 Bar - below spec. Bosch CIS Training Series 3: How to Do Preliminary Fuel Flow and FD Leak Tests. 5 911 T, with it's 2. ALWAYS follow these precautions: 1. Mar 28, 2016 · John, thanks for that. The Bosch number on your fuel distributor Dec 18, 2017 · Through my related thread on "CIS and Fuel Pressure Distributor Seat" for my 1978 VW Rabbit where I discovered (with the help of others) the control pressure regulator was plugged at its inlet and should be replaced, I found out there were about 60 variations of it by Bosch. Copper crush rings for fuel distributor-to-WUR line: NAPA#2-17447 $1. ) CIS, or continuous injection system, is a method of fuel injection which is very different from modern cars. 1mm thick and change pressure by 0. Hope this helps. These valves are adjusted during assembly of fuel distributor and cannot be adjusted in service. Nov 6, 2010 · Fig. 123 Chassis models with gasoline engines were built with CIS fuel injection only. 0 stock ROW SC with a newly rebuilt WUR and distributor and measured fuel pressures for anyone's comment. The CIS fuel pump is bigger than an EFI fuel pump because CIS re-circulates the fuel back to the tank to cool the system. TROUBLE SHOOTING - 420 & 560 SERIES DIAGNOSTIC READOUT Connect Bosch Tester (KDJE-P600) to CIS-E diagnostic connector. CONTROL PRESSURE REGULATOR The control pressure regulator (or warm-up regulator) controls fuel pressure to the top of the plunger in the fuel distributor TYPICAL FUEL INJECTOR PRESSURE TEST (For Bosch CIS and GM TBI, see additional instructions) :LWK HQJLQH RII ORFDWH IXHO SUHVVXUH SRUW DQG VLPSO\ FRQQHFW WKH SURSHU DGDSWHU WR WKH Dec 23, 2023 · Its last iteration, KE-Jetronic (also known as CIS-E or “Continuous Injection System-Electronic”), designated the addition of electronic control for emissions and fuel economy compliance in 1985, before Bosch’s digitally computerized LH-Jetronic made KE-Jet obsolete in 1993. is designed to detect bad fuel pumps, bad pressure regulators, leaking injectors and clogged fuel filters. Please tell me what you think. Fuel Accumulator - Three Fittings - BOSCH CIS K-Jetronic Fuel Injection - (1976 - 1994) Porsche 911 / 930 / 964 Turbo (965) - Porsche Genuine oem/oes Bosch (0 438 170 031) - Sold Each - 1 Per Car - Supersedes# 911 110 197 02 / 911 110 197 34 / 911-110-197-34 / 911. I find Group II to be more common or abundant in my testing. It does function, meaning it warms up and control pressure changes, but since I don't know what the pressure over time chart should be, I have no idea if its in spec. , etc. I have DATA-LOGGED the fuel pressure vs afr (chart below) and you can see the fuel pressure oscillating up to 20 times in 5 seconds so about 5 yo-yos per second. It is a fairly simple DIY job but will all the confusion and misinformation on the internet; one would believe it is a complicated process that is hard to understand. 9 +-20 bar - Nick at Pelican Parts Targa Bob September 29, 2010 There are several checks you can make of CIS components that support the warmed up mode of running without ever starting the engine. 1: CIS-E Fuel Injection Layout (190E/16) Fig. 14: Wiring Diagram for 560SL CIS-E Fuel Inj. Mar 6, 2016 · So to test primary pressure I close the valve, jumper the RPM relay right? The technical manual says the pressure should be 4. Mar 11, 2009 · Next read the lower chamber pressure. g. com FREE DELIVERY possible on eligible purchases 4 days ago · This in-line pressure tester indicates problem sources - control pressure regulator, fuel distributors or other specific fuel injection components that may require replacing. pdf file) For more than ten years, Porsche used the Bosch K-Jetronic Continuous Injection System (CIS) on all production 911s. jihvjx kpl bsoatf vnhq mvqf qpduw gzghuv yaaqs niltkha tzom onewm kcnvacix jwwi sosdg avqq